Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Onde estava a localização onde Justin Robbins lutou contra Billy Kidd?
 ###Tabelas: CREATE TABLE ships_of_the_class (ships_of_the_class_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Pennant number VARCHAR, Laid down VARCHAR, Launched VARCHAR, Date of commission VARCHAR, Homeport (as of July 2013) VARCHAR, Planned decommission (as announced in 2009) VARCHAR) CREATE TABLE european_championship_1977-1987 (european_championship_1977-1987_id AUTO_INCREMENT PRIMARY KEY, Year VARCHAR, Venue VARCHAR, Winners VARCHAR, Runner-up VARCHAR, 3rd place VARCHAR) CREATE TABLE reactor_data (reactor_data_id AUTO_INCREMENT PRIMARY KEY, Unit VARCHAR, Reactortype VARCHAR, Net capacity VARCHAR, Gross capacity VARCHAR, Construction started VARCHAR, Electricity Grid VARCHAR, Commercial Operation VARCHAR, Shutdown VARCHAR) CREATE TABLE mixed_martial_arts_record (mixed_martial_arts_record_id AUTO_INCREMENT PRIMARY KEY, Res. VARCHAR, Record VARCHAR, Opponent VARCHAR, Method VARCHAR, Event VARCHAR, Round VARCHAR, Location VARCHAR) CREATE TABLE friendlies (friendlies_id AUTO_INCREMENT PRIMARY KEY, Date VARCHAR, Opponent VARCHAR, Venue VARCHAR, Score VARCHAR, Attendance VARCHAR, Scorers VARCHAR)  
SELECT Location FROM mixed_martial_arts_record WHERE Opponent = billy kidd